The law of un-intended consequences: rule re-interpretation

[martin417]

The change I was referring to was in this Q&A:

Documentation for 125 psi rating
Posted by FRC2973 at 02/05/2010 11:50:06 am
In reference to Update #5 and Rule R72-c, I have received confirmation from SMC that their SY3000 series solenoids are "rated" at 125 psi even though their operating pressure is listed at ~100 psi. The documentation is outlined here:http://www.chiefdelphi.com/forums/sh...ad.php?t=81946
Is this documentation sufficient to show that these valves do not require an additional pressurerelief valve?


Re: Documentation for 125 psi rating
Posted by GDC at 02/10/2010 02:07:28 pm
Documentation from the manufacturer is acceptable proof that a part meets specific criteria.
Please make sure to bring a copy of the documentation with you to Inspection.

Which adds an interpretation that even though the operating pressure is below the 125 PSI minimum, it is OK to use a valve that won't fail at that pressure.

An important note: the valve they are talking about (SMC SY300) IS AVAILABLE in a 150 PSI model (the K option). That is the valve we used. It is more expensive, and has a long lead time, but it meets the letter of the rule.